add PlaceholderAssets

diff --git a/engine/src/core/com/jme3/util/PlaceholderAssets.java b/engine/src/core/com/jme3/util/PlaceholderAssets.java
new file mode 100644 (file)
index 0000000..8a2630e
--- /dev/null
+++ b/engine/src/core/com/jme3/util/PlaceholderAssets.java
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2009-2012 jMonkeyEngine
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
+ *   may be used to endorse or promote products derived from this software
+ *   without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package com.jme3.util;
+
+import com.jme3.asset.AssetManager;
+import com.jme3.audio.AudioBuffer;
+import com.jme3.audio.AudioData;
+import com.jme3.material.Material;
+import com.jme3.math.ColorRGBA;
+import com.jme3.scene.Geometry;
+import com.jme3.scene.Spatial;
+import com.jme3.scene.shape.Box;
+import com.jme3.texture.Image;
+import com.jme3.texture.Image.Format;
+import java.nio.ByteBuffer;
+
+public class PlaceholderAssets {
+    
+    /**
+     * Checkerboard of white and red squares
+     */
+    private static final byte[] imageData = {
+        (byte)0xFF, (byte)0xFF, (byte)0xFF,
+        (byte)0xFF, (byte)0x00, (byte)0x00,
+        (byte)0xFF, (byte)0xFF, (byte)0xFF,
+        (byte)0xFF, (byte)0x00, (byte)0x00,
+        
+        (byte)0xFF, (byte)0x00, (byte)0x00,
+        (byte)0xFF, (byte)0xFF, (byte)0xFF,
+        (byte)0xFF, (byte)0x00, (byte)0x00,
+        (byte)0xFF, (byte)0xFF, (byte)0xFF,
+        
+        (byte)0xFF, (byte)0xFF, (byte)0xFF,
+        (byte)0xFF, (byte)0x00, (byte)0x00,
+        (byte)0xFF, (byte)0xFF, (byte)0xFF,
+        (byte)0xFF, (byte)0x00, (byte)0x00,
+        
+        (byte)0xFF, (byte)0x00, (byte)0x00,
+        (byte)0xFF, (byte)0xFF, (byte)0xFF,
+        (byte)0xFF, (byte)0x00, (byte)0x00,
+        (byte)0xFF, (byte)0xFF, (byte)0xFF,
+    };
+    
+    public static Image getPlaceholderImage(){
+        ByteBuffer tempData = BufferUtils.createByteBuffer(3 * 4 * 4);
+        tempData.put(imageData).flip();
+        return new Image(Format.RGB8, 4, 4, tempData);
+    }
+    
+    public static Material getPlaceholderMaterial(AssetManager assetManager){
+        Material mat = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
+        mat.setColor("Color", ColorRGBA.Red);
+        return mat;
+    }
+    
+    public static Spatial getPlaceholderModel(AssetManager assetManager){
+        // What should be the size? Nobody knows
+        // the user's expected scale...
+        Box box = new Box(1, 1, 1);
+        Geometry geom = new Geometry("placeholder", box);
+        geom.setMaterial(getPlaceholderMaterial(assetManager));
+        return geom;
+    }
+    
+    public static AudioData getPlaceholderAudio(){
+        AudioBuffer audioBuf = new AudioBuffer();
+        audioBuf.setupFormat(1, 8, 44100);
+        ByteBuffer bb = BufferUtils.createByteBuffer(1);
+        bb.put((byte)0).flip();
+        audioBuf.updateData(bb);
+        return audioBuf;
+    }
+    
+}